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Finding the Fourth Proportional to 73,081.44, 100,835.28 and 42,865.20

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Solution

The fourth proportional to 73,081.44, 100,835.28 and 42,865.20 is: 59,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,081.44 : 100,835.28 = 42,865.20 : x
  2. Step 2: Convert to fraction form
    73,081.44/100,835.28 = 42,865.20/x
  3. Step 3: Cross multiply
    73,081.44x = 100,835.28 × 42,865.20
  4. Step 4: Simplify right side
    73,081.44x = 4,322,324,444.26
  5. Step 5: Solve for x
    x = 4,322,324,444.26/73,081.44
  6. Step 6: Final answer
    x = 59,143.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.